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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012 
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia 
PARTICIPATORY GIS FOR SOIL CONSERVATION IN PHEWA WATERSHED OF 
NEPAL 
Krishna Prasad Bhandari 
Western Region Campus, Institute of Engineering, Tribhuvan University, Pokhara, Nepal 
Email:bhandarikrishna@hotmail.com. 
Commission VIII, WG VIII/8 
KEY WORDS: Participatory Geographic information, Local Knowledge, Stakeholders, RUSLE, 
Soil erosion risk map 
ABSTRACT 
Participatory Geographic Information Systems (PGIS) can integrate participatory methodologies 
with geo-spatial technologies for the representation of characteristic of particular place. Over the 
last decade, researchers use this method to integrate the local knowledge of community within a 
GIS and Society conceptual framework. Participatory GIS are tailored to answer specific 
geographic questions at the local level and their modes of implementation vary considerably across 
space, ranging from field-based, qualitative approaches to more complex web-based applications. 
These broad ranges of techniques, PGIS are becoming an effective methodology for incorporating 
community local knowledge into complex spatial decision-making processes. The objective of this 
study is to reduce the soil erosion by formulating the general rule for the soil conservation by 
participation of the stakeholders. The poster was prepared by satellite image, topographic map and 
Arc GIS software including the local knowledge. The data were collected from the focus group 
discussion and the individual questionnaire for incorporate the local knowledge and use it to find 
the risk map on the basis of economic, social and manageable physical factors for the sensitivity 
analysis. The soil erosion risk map is prepared by the physical factors Rainfall-runoff erosivity, Soil 
erodibility, Slope length, Slope steepness, Cover-management, Conservation practice using RUSLE 
model. After the comparison and discussion among stakeholders, researcher and export group, and 
the soil erosion risk map showed that socioeconomic, social and manageable physical factors 
management can reduce the soil erosion. The study showed that the preparation of the poster GIS 
map and implement this in the watershed area could reduce the soil erosion in the study area 
compared to the existing national policy.